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D100306X012
Type 657 Diaphragm Actuator
Sizes 30-70 and 87
Contents
Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope of Manual 1. . . . . . . . . . . . . . . . . . . . . . . . .
Description 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting the Actuator on the Valve 4. . . . . . . . .
Discussion of Bench Set 5. . . . . . . . . . . . . . . . . . .
Spring Verification 5. . . . . . . . . . . . . . . . . . . . . . . .
Installing the Stem Connector Assembly 6. . . . .
Deadband Measurement 6. . . . . . . . . . . . . . . . . .
Loading Connection 8. . . . . . . . . . . . . . . . . . . . . . .
Maintenance 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Actuator Maintenance 8. . . . . . . . . . . . . . . . . . . . .
Top-Mounted Handwheel Assembly 10. . . . . . . .
Side-Mounted Handwheel for Sizes 34
through 60 Actuators 11. . . . . . . . . . . . . . . . . .
Side-Mounted Handwheel for Sizes 70
and 87 Actuators 12. . . . . . . . . . . . . . . . . . . . . .
Casing-Mounted Adjustable Travel Stops 14. . .
Parts Ordering 15. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Kits 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Kits for Side-Mounted Handwheels 17. . . . . . . . .
Kits for Top-Mounted Handwheels 17. . . . . . . . .
Parts List 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Actuator Assembly (figures 6, 7, or 8) 17. . . . . .
Top-Mounted Handwheel (figures 9 or 10) 18. .
Side-Mounted Handwheel (figure 11 or 13) 18. .
Casing-Mounted Adjustable Up Travel Stops
(figures 14 or 15) 22. . . . . . . . . . . . . . . . . . . . . .
Casing-Mounted Adjustable Down Travel Stops
(figure 16) 23. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction
Scope of Manual
This instruction manual provides information on
installation, adjustment, maintenance, and parts
ordering for the Type 657 actuator in sizes 30
Figure 1. Type 657 or 657-4 Actuator Mounted
on an easy-e
R
Valve
W2174-2/IL
through 70 and size 87. The Type 657-4 actuator in
sizes 70 and 87 is also covered. Refer to separate
instruction manuals for information about the valve
positioner and other accessories used with these
actuators.
Do not install, operate, or maintain a Type 657
actuator without first D being fully trained and
qualified in valve, actuator, and accessory
installation, operation, and maintenance, and D
carefully reading and understanding the contents of
this manual. If you have any questions about these
instructions, contact your Emerson Process
Managementt sales office before proceeding.
Instruction Manual
Form 1900
February 2007
657 Actuator (30-70 and 87)